全球30m地表覆盖遥感制图的总体技术 |
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引用本文: | 陈军,陈晋,廖安平,曹鑫,陈利军,陈学泓,彭舒,韩刚,张宏伟,何超英,武昊,陆苗. 全球30m地表覆盖遥感制图的总体技术[J]. 测绘学报, 2014, 43(6): 551-557 |
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作者姓名: | 陈军 陈晋 廖安平 曹鑫 陈利军 陈学泓 彭舒 韩刚 张宏伟 何超英 武昊 陆苗 |
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作者单位: | 国家基础地理信息中心;北京师范大学地表过程与资源生态国家重点实验室; |
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基金项目: | 国家863计划重点项目“全球地表覆盖遥感制图与关键技术研究”(2009AA122001;2009AA122003) |
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摘 要: | 本文针对全球30米分辨率地表覆盖遥感制图这一世界性难题,提出了以多源影像最优化处理、参考资料服务化整合、覆盖类型精细化提取、产品质量多元化检核为主线的总体研究思路,研发了影像几何与辐射重建、异质异构服务化集成、对象化分层分类、知识化检核处理等主体技术方法;用于制定了相应数据产品规范、生产技术规范,研发了多项生产型软件,用于研制了2000和2010两个基准年的全球)30米地表覆盖数据产品,将空间分辨率提高了1个数量级。
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关 键 词: | 全球地表覆盖 遥感制图 m分辨率 对象化分层分类 服务化集成 |
收稿时间: | 2014-02-20 |
修稿时间: | 2014-03-15 |
Concepts and Key Techniques for 30 m Global Land Cover Mapping |
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Abstract: | Global Land Cover (GLC) characterization and monitoring at fine resolution is a key task and big challenge for both earth observation and geomatics societies in the world. Recently the first operational 30-m GLC mapping project has been completed by China. It is based on the optimum selection and processing of Landsat-like satellite imagery for full global coverage, service-oriented integration of all available reference data and auxiliary information, objected-based precise land cover characterization, and knowledge-based data quality controlling. The key techniques developed include the multi-type imagery geometric processing and radiometric reconstruction, integration of heterogeneous data and external services, object-based thematic-layer classification, and knowledge-based spatio-temporal consistency verification. The technical guidelines and software tools have been further developed for supporting the operational 30-m GLC mapping of the years 2000 and 2010. |
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